import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'

Vue.use(VueRouter)

  const routes = [
    {path: '/', redirect: '/login'},
    {path: '/login', component: Login},
    {path: '/home', component: Home}
]

const router = new VueRouter({
  routes
})
// 路由导航守卫 如果没有登录跳转到登录页面
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转来
  // next 是一个函数 表示放行
  if(to.path === '/login') return next();
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login');
  next();
})
// 暴漏路由
export default router
